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High pressure synthesis and structural study of R2CUO4 compounds with R=Y,TB,DY,HO,ER,TM

✍ Scribed by P. Bordet; J.J. Capponi; C. Chaillout; D. Chateigner; J. Chenavas; Th. Fournier; J.L. Hodeau; M. Marezio; M. Perroux; G. Thomas; A. Varela

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
151 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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✦ Synopsis

The title compounds were synthesized by high pressure/high temperature reactions. TEM revealed the existence of three types of superstructures of the T-structure, which were also observed by powder and single crystal x-ray diffraction. The result of an average structure refinement with the T' unit cell and space group is presented for Tm2CuO4.

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The fimily of compounds \(R_{2}\) Bakios \((R=\mathrm{Nd}\), Dy, Y, Ho. Fr, Tm, Yb) has been studied by neutron powder diffraction il reom temperature. All of them presen orthorhombic symmetry (space group \(/ \mathrm{mmm}\). \(Z=2\) ). The main leat ure of these materials is the existence of one-di